Fits only for M235i, M235iX and M240i, M240iX models!
Please notice:
If you have normal bmw exhaust from factory (no m performance exhaust system) you need between pipes, part number 18302287042.
Cost about 60 euro extra! You need also set of chrome or carbon exhaust tips from the m performance exhaust system to install the diffuser.
Cost about 224 euro (chrome) or 450 euro (carbon)!
Fits not for cars with trailer coupling (S235A) or rear carrier (SZEEA)!